Encounter Atlas

UFO files / Project Blue Book

UFO sightings in Colorado: Air Force files

190 Project Blue Book case files from Colorado, 1947 to 1969. The busiest year was 1967, with 28 reports.

See them on the map

  1. Date unknownApplewood first page
  2. Date unknownColorado Springs first page
  3. Date unknownColorado first page
  4. Date unknownCommerce City first page
  5. Date unknownDenver first page
  6. Date unknownDenver first page
  7. Date unknownSecurity first page
  8. November 1947La Junta & Pueblo first page
  9. September 1948Moffatt first page
  10. December 1948Monte Vista first page
  11. April 1949Colorado Springs first page
  12. April 1949Delta first page
  13. April 1949Denver first page
  14. June 1949Tioga first page
  15. August 1949Denver first page
  16. August 1949Manitou Springs first page
  17. 1950Camp Carson first page
  18. January 1950Denver first page
  19. September 1950Denver first page
  20. September 1950Kit Carson first page
  21. October 1951Buena Vista first page
  22. October 1951Four Corners first page
  23. April 1952Colorado Springs first page
  24. July 1952Colorado Springs first page
  25. July 1952Denver first page
  26. September 1952Denver first page
  27. December 1952Camp Carson first page
  28. December 1952Colorado Springs first page
  29. February 1953Colorado Springs first page
  30. April 1953Grand Valley first page
  31. July 1953Colorado Springs first page
  32. October 1953Lowry AFB first page
  33. April 1954Colorado Springs first page
  34. June 1954Denver first page
  35. July 1954Denver first page
  36. July 1954Lowry AFB first page
  37. March 1955Colorado Springs first page
  38. April 1955Manitou Springs first page
  39. May 1955Colorado Springs first page
  40. May 1955Thurmon first page
  41. November 1955Laveta first page
  42. December 1955Colorado Springs & Denver first page
  43. December 1955Colorado Springs, and Denver first page
  44. December 1955Puebloe first page
  45. May 1956Colorado Springs first page
  46. May 1956Limon first page
  47. May 1956Pueblo first page
  48. August 19561 Mi E Of Denver first page
  49. August 1956Colorado Springs first page
  50. August 1956Colorado, Springs first page
  51. August 1956Crestone first page
  52. August 1956Denver first page
  53. August 1956Denver first page
  54. August 1956Fountain first page
  55. August 1956Hosperus first page
  56. August 1956Pueblo first page
  57. August 1956Pueblo first page
  58. September 1956Colorado Springs first page
  59. September 1956Craig first page
  60. September 1956Denver first page
  61. September 1956Ft. Collins first page
  62. September 1956Peyton first page
  63. September 1956Pueblo first page
  64. October 1956Colorado Springs first page
  65. October 1956Denver first page
  66. October 1956Pueblo first page
  67. November 1956Englewood first page
  68. November 1956Rocky Ford first page
  69. December 1956Denver first page
  70. December 1956Hugo first page
  71. January 1957Glenwood Springs first page
  72. January 1957Longmont first page
  73. March 1957Colorado Springs first page
  74. March 1957Manitou Springs first page
  75. May 1957Near Denver first page
  76. June 1957Villa Grove first page
  77. July 1957Longmont first page
  78. August 1957Peterson Field Colorado Springs first page
  79. August 1957Pueblo first page
  80. September 1957Colorado Springs first page
  81. October 1957Kremmling first page
  82. December 1957Colorado Springs first page
  83. December 1957Englewood first page
  84. February 1958Camp Carson first page
  85. February 1958Colo Springs first page
  86. March 1958Denver first page
  87. April 1958Lowry AFB first page
  88. April 1958N of Lowry AFB first page
  89. May 1958Denver first page
  90. June 1958Climax first page
  91. June 1958North Park first page
  92. June 1958Pueblo first page
  93. August 19583.5 Mi S Of Arvada first page
  94. August 1958Denver first page
  95. September 1958Derby first page
  96. February 1959Boulder first page
  97. February 1959Peterson Fld. Colo Spr. first page
  98. March 1959Lowry, AFB first page
  99. June 1959Lyons first page
  100. August 1959Denver first page
  101. January 1960Denver first page
  102. June 1960Denver first page
  103. June 1960Leadville first page
  104. June 1960Littleton first page
  105. August 1960Littleton first page
  106. September 196040 mi E Grand Junction first page
  107. September 1960Aurora first page
  108. September 1960Boulder first page
  109. September 1960Denver first page
  110. September 1960Englewood first page
  111. September 1960Grand Junction first page
  112. October 1960Boulder first page
  113. October 1960Denver first page
  114. July 1961Golden first page
  115. November 1961Denver first page
  116. April 1962USAF Academy first page
  117. June 1962Pueblo first page
  118. August 1962Aurora first page
  119. August 1962Colorado Springs first page
  120. December 1963Snowmass first page
  121. April 1964Denver & Grand Junction first page
  122. May 1964Denver first page
  123. May 1964Red Feather Lakes first page
  124. July 1964Buckley ANQ Base first page
  125. July 1964Denver first page
  126. July 1964Denver first page
  127. August 1964Colorado Springs first page
  128. August 1964Denver first page
  129. February 1965Colorado, Woodland Park first page
  130. August 1965Colorado Springs first page
  131. August 1965Ent AFB first page
  132. August 1965Ft Carson first page
  133. August 1965Manitou Springs first page
  134. August 1965Montrose first page
  135. August 1965Pueblo first page
  136. September 1965Colorado Springs first page
  137. October 1965Alamosa first page
  138. March 1966Colorado Springs first page
  139. March 1966Ent AFB first page
  140. March 1966LaJunta first page
  141. March 1966Security first page
  142. April 1966Arvada first page
  143. April 1966Colorado Springs first page
  144. April 1966Colorado Springs first page
  145. April 1966Pueblo first page
  146. May 1966Colorado Springs first page
  147. May 1966Colorado, Springs first page
  148. May 1966Fort Carson first page
  149. June 1966Castle Rock first page
  150. June 1966Colorado Springs first page
  151. August 1966Colorado Springs first page
  152. October 1966Colorado Springs first page
  153. October 1966Longmont first page
  154. November 1966Colorado Springs first page
  155. December 1966Boulder first page
  156. December 1966Denver first page
  157. December 1966Englewood first page
  158. December 1966Lakewood first page
  159. January 1967Colorado Springs first page
  160. January 1967Denver first page
  161. February 1967Colorado Springs first page
  162. February 1967Denver first page
  163. February 1967Denver first page
  164. February 1967Englewood first page
  165. February 1967Wheatridge first page
  166. March 1967Colorado Springs first page
  167. March 1967Denver first page
  168. April 1967Colorado Springs first page
  169. April 1967Colorado Springs first page
  170. April 1967Denver first page
  171. April 1967Fairplay first page
  172. April 1967Fort Carson first page
  173. April 1967Plaza first page
  174. April 1967Westminister first page
  175. May 1967North Glen first page
  176. June 1967Colorado first page
  177. June 1967Ft. Lupton first page
  178. June 1967Indian-Hills first page
  179. July 1967Colorado Springs first page
  180. July 1967Denver first page
  181. August 1967Near Westcliffe first page
  182. September 1967Lakewood first page
  183. October 1967Denver first page
  184. October 1967Rocky Mountain National Park first page
  185. October 1967Webly first page
  186. December 19671 Mile NE Of Buckley ANG Base first page
  187. January 1968Castle Rock first page
  188. March 1968Near Grand Valley first page
  189. August 1968Colorado Springs first page
  190. July 1969Denver first page

Links open the original folder at the US National Archives.